From 57a0aa351bff86bd529c8638a376cf0a18b60eae Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Fri, 16 Oct 2009 15:55:32 +1100 Subject: [PATCH] md/raid1/raid10: add a cond_resched commit 1d9d52416c0445019ccc1f0fddb9a227456eb61b upstream. During 'check' of a raid1 or raid10 it is possible for the management thread to spend a lot of time running 'memcmp' on blocks from different devices, so make sure the thread has a chance to schedule. raid5d already has a cond_resched (in process_stripe). Reported-By: Lee Howard Signed-off-by: NeilBrown Signed-off-by: Greg Kroah-Hartman --- drivers/md/raid1.c | 1 + drivers/md/raid10.c | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 8726fd7ebce5d..67cd1d9fa4ba3 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1676,6 +1676,7 @@ static void raid1d(mddev_t *mddev) generic_make_request(bio); } } + cond_resched(); } if (unplug) unplug_slaves(mddev); diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 3d9020cf6f6e4..6a5a5fb18b30a 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1630,6 +1630,7 @@ static void raid10d(mddev_t *mddev) generic_make_request(bio); } } + cond_resched(); } if (unplug) unplug_slaves(mddev); -- 2.47.2